Smelting furnace spray gun and smelting furnace

Abstract

The invention discloses a smelting furnace spray gun and a smelting furnace. The smelting furnace spray gun comprises an outer pipe, an outer pipe end pipe, an inner pipe and an inner pipe end pipe. Awall body of the outer pipe end pipe is provided with a plurality of axially-penetrating outer pipe end air supply channels. The outer pipe end pipe and the outer pipe are coaxially arranged, and anouter ring portion of one end portion of the outer pipe end pipe is welded and fixed with one end portion of the outer pipe. The inner pipe is rotatably and coaxially arranged in the outer pipe, andan axial air supply channel with an annular section is arranged between an outer circumferential surface of the inner pipe and the inner circumferential surface of the outer pipe. The inner pipe end pipe is coaxially arranged in the outer pipe, and a plurality of axially-penetrating inner pipe end air supply channels are arranged on the wall body of the inner pipe end pipe. One end portion of theinner pipe end pipe is welded and fixed with one end portion of the inner pipe. And the other end portion of the inner pipe end pipe is propped against an inner ring portion of one end portion of theouter pipe end pipe. By using the smelting furnace spray gun, a combustion-supporting gas inlet amount and a fuel conveying amount can be adjusted, an adjusting range is large, and service lives of the smelting furnace spray gun and the smelting furnace are effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of smelting furnaces, in particular to a smelting furnace spray gun and a smelting furnace. Background technique [0002] Existing smelting furnaces such as side-blown furnaces and oxygen-enriched electrothermal reduction furnaces all use spray guns. Among them, the spray gun can deliver fuel and combustion-supporting gas at the same time, but it can only be fine-tuned. A large amount of fuel and combustion-supporting gas needs to be delivered, and the existing spray gun cannot be adjusted to meet the process requirements of this stage. If the existing spray gun is adjusted in a large range, the pressure of the spray gun cannot be guaranteed, which will greatly affect the life of the spray gun and the furnace. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide ...

AI Technical Summary

Problems solved by technology

[0002] Existing smelting furnaces such as side-blowing furnaces and oxygen-enriched electrothermal reduction furnaces all use spray guns. Among them, the spray gun can deliver fuel and combustion-supporting gas at the same time, but it can only be fine-tuned. A large amount of fuel and combustion-supporting gas needs to be delivered, and the existing spray gun cannot be adjusted to meet the process requirements of this stage

If the existing spray gun is adjusted in a large range, the pressure of the spray gun cannot be guaranteed, which will have a great impact on the life of the spray gun and the furnace

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